Welt-knitting machine.



F. B. WILDMAN & 'G. L. BALLARD.

WELT KNITTING MACHINE.

APPLICATION FILED JUNE 17, 19| 2.

Patented Dec. 28, 1915.

3 SHEETS-SHEET 1.

ADDITIONAL THREAD EEO Ewen/7502's;

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F. B. WILDMAN & G. L. BALLARD.- WELT KNITTING MACHINE.

APAPLVICAITION FILED IUNE 12. I912.

1,166.289. Patented Dec. 28,- 1915.

3 SHEETS+SHEET 2.

F. B. WILDMAN & G. L. BALLARD.

WELT KNITTING'MACHINE.

APPLICATION FILED JUNE 17, 1912.

Patented Dec. 28, '1915.

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entree s FREE-3'11 B. WILDMAN AND GEORGE LA'WSGN BALLARE, OF NORRISTOWN, .tlflNNSYl-- VATNSA, ASSIGNQRS TO WILDMAN MEG. 00., A CORPORATION OF PENNSYLVANIA.

f" ffELT-KNET TING MACHINE.

Specification of Letters Patent.

Application filed June 17, 1912. Serial No. MAGS.

To all whom it may concern:

Be it known that We, FRANK B. Winnnen and GEORGE LAWSON BALLARD, a citizen of the United States and a subject of the King of Great-Britain, respectively, and residents of Norristown, Pennsylvania, have invented certain new .and useful Improvements in felt-Knitting Machines, of which the following is a specification.

Our invention relates to that type of latch needle rib knitting machine which is signed to produce tubular welts, and in which a single main thread is used, and an additional thread is thrown in when the welt is to be formed.

Our present invention is an improvement upon that disclosed in Letters Patent of the United States granted to us ll lay 25, 1915, No. 1,140,783. v

In the accompanying drawings Figure l. is a plan view of a knitting head embodying our invention; Fig. 2 is a developed view of the cam box of the cylinder needles; Fig. 2 is a detail of one of the can"; posts.

Fig. 3 is a side view of the additional thread feeder and the thread. cutter and clamp. Fig. 4 is a bottom plan view of the thread putter and clamp. Fig. 5 is a side view of a pattern wheel and lever inechair ism for controlling the movements or the needle cams of the needle cylinder and for controlling an additional yarn feed mechanism.

In these drawings, 1 is the main thread guide of usual construction, this being suitably fixed to the dial cap as in ordinary practice to rotate therewith.

2 is the guide for the additional thread, which thread is used for forming the outer wall of 'the tubular welt. di ametr 11;." consists of the arm 3, pivoted. to a bracket mounted to rotate with the cylinder cums said arm being operated to and from the needles to present the thread thereto or remove it therefrom by means similar in some respects to that disclosed in lfJet-te s Patent of the United States granted to J, B. Hi well, #815,167, lfvlaroh 13,. 19%, and consisting generally of a star wheel 5 which, when operated by contact with device on the frame, operates through gearing 6 a cam shaft 7 to raise the lever or thread guide arm or to allow it to fall under the action of a suitable spring. lit 9 is shown This gnide l on )OSltG the main mode and a cuttingdevice for the additional thread, which is operated to sever it when the guide arm is raised, and at 10 is a clamp for holding; the severed end of the thread so that "when the guide arm is again lowered the thread will be presented to the needles, the clamp insuring; proper control of the thread until the needles have taken it.

The star wheel 5 of the additional thread feeder is operated by contact with a controlling pin 11 carried by a plate 12 which is adjusted vertically into and out of line with the star wheel by suitable pattern mechanism. (not shown).

One movement of the star wheel will throw the guide arm 2 up and the next action of the star wheel will permit the guide arm to fall to present the thread to the cylinder needles.

The cutter, above mentioned, includes a fixed blade 9 and a movable blade 9 ivoted at 9, 4. Toe movable blade is pressed open spring 9 and it is closed to sever the yarn by a rod 9 slidably mounted in the frame of thread feeder and acted on by the lever or arm 3/, pivoted to the "frame of the thread feeder at 9 its free end being in position to be operated by contact with the pin 11 above mentioned. "When the arm 1;" is swung inwardly by striking the pin 1]. the shear blade 9 will operate in coniunction with the lixedblade and the .inping plate 10 which is attached to and moves with the movable blade 9 will engage and clamp the yarn upon the upper surface of the fixed lT-ladc over which the clamping blade moves it. lVhen the rod 9 is moved inwardly and the shear and clamp closed to cut and hold the thread, the said parts will be held in this position by the frictional encu'lent of detent lever 5% pivoted to the frame and pressed by a spring 55, this cam shalt which Controls the guide arm 2 and said detent lever will release the rod 9 and the shears and. clamp will then he opened and the thread will now be taken by the cylinder needles.

[El e came of the dial consist of a stitch cam 12 and a, fiiz d 11va11eiz1g cam 3.34, i'ihe feet? and an the dial needles abthe main latter difierimgg fmm the cum our pre- "J; 'vious appiifcaizwn in that ii; is in. the r mriei' iy stated Mile complefie oper-vpresent case, or in M11181? Words, it 110%. time O f E OK'IHiKIQ; the Welt 331d. file searing fi operate/den no part 111 :nakmg the 1 "rpreeeahpg 1t and then welt 011 the iinder 19 dies. is as; :fellewe: throw- The cams $501 the c vfimier u t1 read the point of the mh'akming cam in W' are my .amittin ems in the termed, f0? souvenience, She eeem ruiivax1-..mg mm 0 be 1 {1; mm mm stitch cam 22, for the mm Mdi f. flu mi :1; Welt on oyiinfiier needles M;

1 P :14; m coura e 01 coursesa being" 33m at the main feed. which and; a second aimn-eing cum 0 and. sii'ibeh course #3 cam 05. These ams 0 anti (ii are 1501? iii 11 551 a welt on the eyimder neenfles m 2201mm. e 1

M eriuae wit of the clearing course in prevami;

W the 1 back, They are also used ier n uicliioml thread inc anew the cleanup; course when the 'n guide cier needing an, the and sesame advancthe acichtlonal thread as mused w 'vme'lr: 7;: v etch mm 1% 30 knit ed? for the said thread, and they 2.150 1312.11? outer W111i of the tubular welt on the 1 cier needle. wall a]? eke m In knitting" rib fabric only the n" in eeurses; throwing flee ad in again :50 make the, outer with the cams 0 and c5 Whieh 35 mien. 1gp, and them-easing the first thread feed 1 '24 used, the cams i 3:, 0:? the c g huder advancing; cam a, tn make the inner cylinder ami 13, 12, of the inn cab'gvel'mlng Wall 0 the 1521mm;- Webb on the dwl needles;

to'p'mdn-ee ibis effect zhe sesame? advancing cam and;

When. the tubular welt is be be met} w vingg; the additional thread to stop the order of opemfiens felews: The at'im'z. m? the outer WM]. of the tubuysu'in guide-finger 2 is lowered, EM-in ing fl'ze hr welt, anti finally raising the first adadditienni thread in the path of ihe cylinder vanchxg mm a to resume rib knitting For needles, this taking place at the point the throwing the additional thread into action,

3g; circuit 0f the machine where there are we the W el and. pin 11 act above dedin mlvmlcing 0r stitc? e2 Wm be sex-13nd,, V. zlfier fiu's thread has been clear from: an, inspectiml an? 1. @f the thrown mm pssition be mkenby the nee- & 'awing, so that only the cyhndur neex'lles N, i he eeeond min-aiming cam r] is raised. will take this additiomli tin-Bad, for which (Zone by a cam. disk 14: acting on a purpose the 011m 0 is raised to advance the pin :55 an the car- 1 poet 0* f th ame. This 10 cylinder needies. This will. produce a. series cam disk 14- is fixei 610 a shaft 16 which. is of one-course weits, on this 'de of the mm gem-ml to a shaft 1?". Them l fl rry r chine, alum-hating; with win-see pininrib speetively arms 18 and 19 in be struck by knitting); produced at the 11min "1 49 These man's-res of welt are formed because at being UfKiQT O0i1 that the needle cam cmr- 105 *his point the dial medies are always (11mm lers; rotate in the direction if the arrow 21. Them Welt courses se ve to hold the H. The cam fiisk H- has an incline at 14" oops i'rom rnvehng baeiz when the eieavand when it 1:; rotated 1n the arrow dime mg cm'u'ee which precedes: the tubular. WQH Lion this inelim Working); under the pin 15,

is mfidfi- This fi g'zi mwse is j by xvii} 3i :0 cum s. 15?; is minted in this db R- Withdrawing the Fm-em]. at mu? 1 reeitien 3 the arm 13 striking: the roller 20. the cum/17 to lmi; oit'. Timi'. is 1'11: say, as Th mm C remaing up ezmring the zfifi'rrmseen as the aedit'ienal thread is; sithirmvzl time an? the single Welt courses. the Hearing n cams i, and 1.3 Win (111L189 the titciiies if-0 $36 0 12 339 mm the formation m the 911119 W111] off 4% this point, and iihus the clearing," 0+ 1e m brim" welt 115 wiii be farmed. For a Yib knitifing is to be resumedJthe 1 (1 L4 is mtete bank by the arm 1.8

m 6 remains up in the 5""10 p0 U wheh it Wfls raised 12': making the sinking the mHer 20 to remove the ineiine remedies take the ndrhtmmi thread W11; 3. 2 from under the win 15, whereupon the l L- 1. 5:); Miller thrown 121 (01' mmungg the we! 1 m W11}, mil. 1i: being pressed down by a I ssiziimient number of elezu'ifagg cnuises have 3 )GLKI made, ihe finger 2 1s ngzun ilu' own 1min m wh l hitti th i 11.

Mien, and at the same time the cylinier he mivancing cam 11 is operated by .5 m filming C21?!) 0 011 $3118 OPPOSiiJ E Of (1151 1 11151;; mun havinggn (mggg.

mamine is izhmwn down out of action sensing the machine m knit an 53;"53 eyhnder lies at one side of the manh'h'se, and em.

din? medics on the ether cyfinier needles m; the addlmoml ndma, pin 22 of the post a of t .e cam iish' 21 is: amemted by an arm roller 528* the mid arm being Hm shaft; 35 of M10 is eormlecfwed the arm. for returning the cam disk to its inactive position when the arm strikes roller '20. This cam a, as in the application referred to,'and in Letters Patent of the United States #1047355,

December 17 1912, granted to us, is'moved down step by step. It is springpressed downwardly, and when'the cam disk is rotated to remove the incline 21' the'cam 0 falls until its post is caught by a latch or catch lever 26*, which entersa notchin the post, the catch being pressed by a spring 27.

This spring actsagainst a lug on the arm 26 which is an integral part of, the latch 26 and turns about the shaft 25 all as in the patent referred to. The cam is now held in its intermediate position until the arm .26

of the catch strikes the pattern disk '20,

i when the post a is released and the spring thereof forces the cam all .the way down out of actionfor thev formation of the inner wall of the tubular Welt on the dial needles. The;

notched post isshownin Fig. 2.

- The arms of'the pairs 18,19, and 23, 26,

are in different horizontal planes, as is usual in this type of machine, and thecontrolling roller 20 is controlled by pattern mechanism which raises it into the different planes, in which' these' arms lie, for their operation.

. The stitch cam 12 is operated for the slack and loose course through an arm 28 having studs 28, 28", to'bear on inclines on the head of the post 5 of the cam b,'the arm 28 being operated from contact arms 30, 31

which, at proper times, strike the roller 20. The plate carrying the pin 11 for operating the star wheel is also operated vertically by pattern mechanism, not shown, to hit or miss the star wheel. I

The cuttingand clamping means for the additional thread is substantially thesame as that disclosed in the Letters Patent 1,140,783, May 25, 1915, above referred to.

The cams 0 and d may be said to perform a three-fold function in our present machine, in that they serve to form the one course welts which precede the clearing course; they fornrthe clearing course when the additional thread is thrown out and they form the outer.- wall of the tubular welt when the additional thread is again thrown in.

As in the application abovereferred to,

' when the stitch cam d is in the position shown in full lines, the cylinder needles are retracted far enough to cast off their stitches for the clearing course. .VVhen, however, the additional thread is thrown in, the cam 11 is simultaneously lowered to draw sufficient yarn to make stitches.

his lowering of the cam d at the time the additional thread is drawn into-the cylinder needles is efi'ected by a cam at 7*"on the shaft of the additional feeder acting on a lever 32 connected with a rock shaft mounted on the frame or bracket of the additional feeder, said shaft having an arm 24: overlying the stem 11* of the cam at so that it will press the samedown at the time the additional thread is thrown in to draw enough yarn to, form a stitch.

All of the posts of the cams are spring grossed, the s rings of 0 and a pressing ownwardly W ile the springs of d and b press upwardly i 1 i The geared connection between the pairs of shafts 16, 17; 24 and 25, isf substantially the same as that shown in the said patent at T be e an sms n i. roller 20 1ts ,difierent pos tions' for operati the various arms mentioned may'assume ferent forms, but as oneform we showin Fig. 5 a pattern wheel 33 having cam blocks removably' carried thereby. The blocks are marked generally 33. They are of differ- 49,, 50,. for theipair of shafts 43, 48, this connection being Well known in ithe prior art. k

ent height according to the requirements of.

.the work to be produced and they operate the lever 34 which engages the stein 20 of the 'roller'20 The high blocks raise the arm engaging with the stem 12" of 'the pin" f plate 12 and its other-arm arranged to be engaged'by pins 36' on the pattern wheel for l'fting the said plate, the leverarm havmg an inclined surface at 37 against which the pins-ride. In the operation of'this pat tern wheel,,the starting point-is at X. When the low part of block 30 allows roller 34* and lever 34 to fall and lower the rolicr 20 this roller'will operate the arm orlever 30 for the loose course; When block 31' comes under ,the roller 348 the arm31 will be operatedto throw out the loose course. When patternfblock 19 is eflective'arm 19 ill be operated by roller '20, and this takes'pl-ace at the time the additional thread is thrhwn in for the anti-ravel course, the operation of arm 19- causing the raising of the cylinder cam a. block 18 elevate the roller 34*, which causes the operation of arm-18 and control of needle cam c. The next partof the cam .block'system to act on lever- 534 is the low part 19 which brings roller 20in position for operating arm" 19 and needle cam 0. At 26 of the pattern wheel the rdller 20 is adjusted in position to operate on arms 26 and 26 of n le cam a, for lowering the same, for thetf-ormation of the welt on the dial needles. 18 of the pattern wheel the Cam block 19 jointly with cam arm 18 of thesecond advancing cam of the cylinder is operated, this being at the timethose of the dial for makirfy'rm fabric with vancmg cam and the main thread, a secondm' a second stitch cam in the cylinder at the additional thread feed opposite thepoint in the a dial where there is noadvancing and stitch cam for the additional thread feed, controlling means for throwing the additional feed into, operation and means for controlling the cylinder cams to make a welt on the cylinder needles at said additional feed while rib fabric is being made at the main feed, and to subsequently make a welt on the dial needles at the main feed while welt is being made atthe additional feed on the cylinder needle and to resume rib knitting.

2. In a latch needle rib knitting machine, a main thread feed, an additional thread feed,-dial cams consisting of a stitch cam and a non-adjustableadvancing cam at the main feed, an advancing and a stitch cam in the cylinder adjacent those of the dial formaking rib fabric with the main thread, a-

second advancing cam and a second stitch cam in the cylinder at the additional thread feed opposite the point in the dial where there is no advancing and stitch cam for the additional thread feed, controlling means for throwing the additional feedinto operiation and means for controlling the cylinder cams to make a welt on the cylinder needles at said additional feed while rib fabric is being made at'the main feed, and to subsequently make a welt on the dial needles at the main feed while welt is being made at the additional feed on the cylinder needle and to resume rib knitting a In a latch needle rib knitting machine, a main thread feed, an additional thread feed, dial cams consisting ofone stitch cam and one advancing cam at the main feed, an advancingv and stitch cam in the cylinder adjacent those of the dial for makingrib fabric, a second advancing and stitch cam in the cylinder at the additional feed, means for operating the additional thread feed to throw the same in, means for raising the second advancing cam when' the additional cylinder needles at the second advancing and stitch cam to knit off for formin clearing courses, said operating means or the additional thread then throwing the. same in to make one wall of the tubular welt with the additional thread, means for then depressing the first cylinder advancing cam to allow the dial needles to make the other wall of the welt, the operatin means for the second advancing cam then lowering the same and the operating means for the additional thread then withdrawing the additional thread to stop the formation of the outer wall of the welt, and the o erating means for the first advancing cam t on rais ing the same to resume rib knitting, substantially as described.

4. In a rib-knitting machine, a main thread feed, an additional thread feed, dial cams consisting of one stitch and one ad vancing cam at the main feed, an advancing cam and a stitch cam for the cylinder needles adjacent those of the dial for making rib fabric, a secondadvancing cam andv a second stitch cam for the cylinder needles courses on the cylinder needles while a rib 7 course or courses are being formed at the main feed, means for subsequently depressing the first cylinder cam to make welt on the dialneedles at the main feed while welt is being made at the additional feed on the cylinder needles, the operating means Ior the secondadvancing cam then lowering the same and the operating means for the ladditional thread then withdrawing the same to stop-the formation of the welt on the cylinderneedles, and the operating means for the first advancing cam then raising the same to resume rib-knitting with the main thread, the said dial cams having a fixed re lation to each other for the operations mentioned, substantially as described.

In testimony whereof, we afiix our signatures in presence of two witnesses;

" FRANK, B. \VIHDMAN.

GEORGE LAWSON BALLARD. Witnesses:

E. R. Ro'nnars, OWEN BALLARD, 

